Which of the Following is Properly Matched

Question

Which of the following is properly matched?  
A) Osteoblasts and bone breakdown
B) Osteocytes and initial bone formation
C) Osteoclasts and initial bone formation
D) Osteoclasts and bone breakdown
E) Osteoblasts and cartilage formation

Accepted Answer

Osteoclasts are responsible for bone breakdown, while osteoblasts are responsible for bone formation. Osteocytes are mature bone cells that maintain bone tissue. Osteoclasts and osteoblasts are involved in bone remodeling, with osteoclasts breaking down old or damaged bone and osteoblasts building new bone tissue in its place. Therefore, the properly matched option is D - osteoclasts and bone breakdown.